Principality of Wales

The Principality of Wales was a state that existed in Wales from 1216 to 1542, with Abergwyngregyn serving as its capital for much of its existence. It was formed at the 1216 Council of Aberdyfi and later recognized by the 1218 Treaty of Worcester between Llywelyn the Great of Wales and Henry III of England. The principality retained a great deal of autonomy, although it owed fealty to England. Its de facto independence ended as a result of Edward I of England's conquest of Wales from 1277 to 1283, becoming an annexed territory of the English crown. From 1301, Wales was the appanage of the English heir apparent, who held the title "Prince of Wales". On two occasions, Welsh claimants to the title rose up in rebellion, but neither ultimately succeeded. In 1542, Wales was incorporated into England, making "Prince of Wales" an honorary title.